Spring Security 实现“记住我”功能及原理解析

				记住我
			

/**
	 * 记住我功能的Token存取器配置
	 * 
	 * @return
	 */
	@Bean
	public PersistentTokenRepository persistentTokenRepository() {
		JdbcTokenRepositoryImpl tokenRepository = new JdbcTokenRepositoryImpl();
		tokenRepository.setDataSource(dataSource);
		// 启动的时候自动创建表，建表语句 JdbcTokenRepositoryImpl 已经都写好了
		tokenRepository.setCreateTableOnStartup(true);
		return tokenRepository;
	}

protected void configure(HttpSecurity http) throws Exception {
		ValidateCodeFilter validateCodeFilter = new ValidateCodeFilter();
		http.addFilterBefore(validateCodeFilter, UsernamePasswordAuthenticationFilter.class)
				.formLogin()
				.loginPage("/authentication/require")
				.loginProcessingUrl("/authentication/form")
				.successHandler(meicloudAuthenticationSuccessHandler)
				.failureHandler(meicloudAuthenticationFailureHandler)
				// 配置记住我功能
				.and()
				.rememberMe()
				// 配置TokenRepository
				.tokenRepository(persistentTokenRepository())
				// 配置Token过期时间
				.tokenValiditySeconds(3600)
				// 最终拿到用户名之后，使用UserDetailsService去做登录
				.userDetailsService(userDetailsService)
				.and()
				.authorizeRequests()
				.antMatchers("/authentication/require", securityProperties.getBrowser().getSignInPage(), "/code/image").permitAll()
				.anyRequest()
				.authenticated()
				.and()
				.csrf().disable();

	}

 protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain, Authentication authResult) throws IOException, ServletException {
 if (this.logger.isDebugEnabled()) {
  this.logger.debug("Authentication success. Updating SecurityContextHolder to contain: " + authResult);
 }

 SecurityContextHolder.getContext().setAuthentication(authResult);
 this.rememberMeServices.loginSuccess(request, response, authResult);
 if (this.eventPublisher != null) {
  this.eventPublisher.publishEvent(new InteractiveAuthenticationSuccessEvent(authResult, this.getClass()));
 }

 this.successHandler.onAuthenticationSuccess(request, response, authResult);
 }

 public final void loginSuccess(HttpServletRequest request, HttpServletResponse response, Authentication successfulAuthentication) {
 	// this.parameter = "remember-me"
 if (!this.rememberMeRequested(request, this.parameter)) {
  this.logger.debug("Remember-me login not requested.");
 } else {
  this.onLoginSuccess(request, response, successfulAuthentication);
 }
 }

 protected void onLoginSuccess(HttpServletRequest request, HttpServletResponse response, Authentication successfulAuthentication) {
 String username = successfulAuthentication.getName();
 this.logger.debug("Creating new persistent login for user " + username);
 // 生成Token
 PersistentRememberMeToken persistentToken = new PersistentRememberMeToken(username, this.generateSeriesData(), this.generateTokenData(), new Date());
 try {
 	// 将Token和userName插入数据库
  this.tokenRepository.createNewToken(persistentToken);
  // 将Token写到Cookie中
  this.addCookie(persistentToken, request, response);
 } catch (Exception var7) {
  this.logger.error("Failed to save persistent token ", var7);
 }
 }

public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
 HttpServletRequest request = (HttpServletRequest)req;
 HttpServletResponse response = (HttpServletResponse)res;
 if (SecurityContextHolder.getContext().getAuthentication() == null) {
  Authentication rememberMeAuth = this.rememberMeServices.autoLogin(request, response);
  if (rememberMeAuth != null) {
  try {
   rememberMeAuth = this.authenticationManager.authenticate(rememberMeAuth);
   SecurityContextHolder.getContext().setAuthentication(rememberMeAuth);
   this.onSuccessfulAuthentication(request, response, rememberMeAuth);
   if (this.logger.isDebugEnabled()) {
   this.logger.debug("SecurityContextHolder populated with remember-me token: '" + SecurityContextHolder.getContext().getAuthentication() + "'");
   }

   if (this.eventPublisher != null) {
   this.eventPublisher.publishEvent(new InteractiveAuthenticationSuccessEvent(SecurityContextHolder.getContext().getAuthentication(), this.getClass()));
   }

   if (this.successHandler != null) {
   this.successHandler.onAuthenticationSuccess(request, response, rememberMeAuth);
   return;
   }
  } catch (AuthenticationException var8) {
   if (this.logger.isDebugEnabled()) {
   this.logger.debug("SecurityContextHolder not populated with remember-me token, as AuthenticationManager rejected Authentication returned by RememberMeServices: '" + rememberMeAuth + "'; invalidating remember-me token", var8);
   }

   this.rememberMeServices.loginFail(request, response);
   this.onUnsuccessfulAuthentication(request, response, var8);
  }
  }
  chain.doFilter(request, response);
 } else {
  if (this.logger.isDebugEnabled()) {
  this.logger.debug("SecurityContextHolder not populated with remember-me token, as it already contained: '" + SecurityContextHolder.getContext().getAuthentication() + "'");
  }
  chain.doFilter(request, response);
 }
 }

protected UserDetails processAutoLoginCookie(String[] cookieTokens, HttpServletRequest request, HttpServletResponse response) {
 if (cookieTokens.length != 2) {
  throw new InvalidCookieException("Cookie token did not contain 2 tokens, but contained '" + Arrays.asList(cookieTokens) + "'");
 } else {
  String presentedSeries = cookieTokens[0];
  String presentedToken = cookieTokens[1];
  PersistentRememberMeToken token = this.tokenRepository.getTokenForSeries(presentedSeries);
  if (token == null) {
  throw new RememberMeAuthenticationException("No persistent token found for series id: " + presentedSeries);
  } else if (!presentedToken.equals(token.getTokenValue())) {
  this.tokenRepository.removeUserTokens(token.getUsername());
  throw new CookieTheftException(this.messages.getMessage("PersistentTokenBasedRememberMeServices.cookieStolen", "Invalid remember-me token (Series/token) mismatch. Implies previous cookie theft attack."));
  } else if (token.getDate().getTime() + (long)this.getTokenValiditySeconds() * 1000L < System.currentTimeMillis()) {
  throw new RememberMeAuthenticationException("Remember-me login has expired");
  } else {
  if (this.logger.isDebugEnabled()) {
   this.logger.debug("Refreshing persistent login token for user '" + token.getUsername() + "', series '" + token.getSeries() + "'");
  }
  PersistentRememberMeToken newToken = new PersistentRememberMeToken(token.getUsername(), token.getSeries(), this.generateTokenData(), new Date());
  try {
   this.tokenRepository.updateToken(newToken.getSeries(), newToken.getTokenValue(), newToken.getDate());
   this.addCookie(newToken, request, response);
  } catch (Exception var9) {
   this.logger.error("Failed to update token: ", var9);
   throw new RememberMeAuthenticationException("Autologin failed due to data access problem");
  }

  return this.getUserDetailsService().loadUserByUsername(token.getUsername());
  }
 }
 }